Originally Posted by EVT
Thanks avatar. I've been mulling over the decision for the last couple of days but I think you're correct - I have to get somewhere where I can listen for the difference. ..
Nah, just get a 4520 or 4311.
Or even an Onkyo AVR with XT32.
It is really hard to compare AVRs because of all the confounding factors. I think that if you shut off Audyssey and did a level-matched BAB at average listening level between 3313 and 4520, identical settings throughtout and same source, same speakers, it would not be all that obvious which is which irt SQ. Speakers do make far more of an obvious difference.
IMO the MultEQXT32 superior DSP RC over XT is the most important feature accounting for the 4520 having superior SQ to the 3313. Same goes for the few remaining 4311s, the older XT32 model that also has great SQ.
IME as you move up the Denon line, there are usually some other differences such as the exact level of AL24 Processing Plus, etc. that may add a bit to SQ. Amp wattage makes little difference but the acceptable ohm range can matter (I was running 4 ohm speakers with the 4310 rated 6-16 ohms and I could hear strain at volume). I've had Denon models from several lines and years: 19xx, 2808, 2809, 4310 and 4311 and have enjoyed better SQ each move up, and improved levels of Audyssey have been a consistent part of that.